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bd2b40ac12
This changes GDB to use frame_info_ptr instead of frame_info *
The substitution was done with multiple sequential `sed` commands:
sed 's/^struct frame_info;/class frame_info_ptr;/'
sed 's/struct frame_info \*/frame_info_ptr /g' - which left some
issues in a few files, that were manually fixed.
sed 's/\<frame_info \*/frame_info_ptr /g'
sed 's/frame_info_ptr $/frame_info_ptr/g' - used to remove whitespace
problems.
The changed files were then manually checked and some 'sed' changes
undone, some constructors and some gets were added, according to what
made sense, and what Tromey originally did
Co-Authored-By: Bruno Larsen <blarsen@redhat.com>
Approved-by: Tom Tomey <tom@tromey.com>
224 lines
6.7 KiB
C
224 lines
6.7 KiB
C
/* Target-dependent code for NetBSD/powerpc.
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Copyright (C) 2002-2022 Free Software Foundation, Inc.
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Contributed by Wasabi Systems, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "gdbtypes.h"
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#include "osabi.h"
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#include "regcache.h"
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#include "regset.h"
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#include "trad-frame.h"
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#include "tramp-frame.h"
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#include "ppc-tdep.h"
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#include "netbsd-tdep.h"
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#include "ppc-tdep.h"
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#include "solib-svr4.h"
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/* Register offsets from <machine/reg.h>. */
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static ppc_reg_offsets ppcnbsd_reg_offsets;
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/* Core file support. */
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/* NetBSD/powerpc register sets. */
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const struct regset ppcnbsd_gregset =
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{
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&ppcnbsd_reg_offsets,
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ppc_supply_gregset
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};
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const struct regset ppcnbsd_fpregset =
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{
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&ppcnbsd_reg_offsets,
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ppc_supply_fpregset
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};
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/* Iterate over core file register note sections. */
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static void
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ppcnbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
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iterate_over_regset_sections_cb *cb,
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void *cb_data,
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const struct regcache *regcache)
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{
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cb (".reg", 148, 148, &ppcnbsd_gregset, NULL, cb_data);
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cb (".reg2", 264, 264, &ppcnbsd_fpregset, NULL, cb_data);
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}
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/* NetBSD is confused. It appears that 1.5 was using the correct SVR4
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convention but, 1.6 switched to the below broken convention. For
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the moment use the broken convention. Ulgh! */
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static enum return_value_convention
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ppcnbsd_return_value (struct gdbarch *gdbarch, struct value *function,
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struct type *valtype, struct regcache *regcache,
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gdb_byte *readbuf, const gdb_byte *writebuf)
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{
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#if 0
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if ((valtype->code () == TYPE_CODE_STRUCT
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|| valtype->code () == TYPE_CODE_UNION)
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&& !((valtype->length () == 16 || valtype->length () == 8)
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&& valtype->is_vector ())
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&& !(valtype->length () == 1
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|| valtype->length () == 2
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|| valtype->length () == 4
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|| valtype->length () == 8))
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return RETURN_VALUE_STRUCT_CONVENTION;
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else
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#endif
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return ppc_sysv_abi_broken_return_value (gdbarch, function, valtype,
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regcache, readbuf, writebuf);
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}
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/* Signal trampolines. */
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extern const struct tramp_frame ppcnbsd2_sigtramp;
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static void
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ppcnbsd_sigtramp_cache_init (const struct tramp_frame *self,
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frame_info_ptr this_frame,
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struct trad_frame_cache *this_cache,
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CORE_ADDR func)
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{
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struct gdbarch *gdbarch = get_frame_arch (this_frame);
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ppc_gdbarch_tdep *tdep = gdbarch_tdep<ppc_gdbarch_tdep> (gdbarch);
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CORE_ADDR addr, base;
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int i;
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base = get_frame_register_unsigned (this_frame,
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gdbarch_sp_regnum (gdbarch));
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if (self == &ppcnbsd2_sigtramp)
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addr = base + 0x10 + 2 * tdep->wordsize;
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else
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addr = base + 0x18 + 2 * tdep->wordsize;
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for (i = 0; i < ppc_num_gprs; i++, addr += tdep->wordsize)
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{
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int regnum = i + tdep->ppc_gp0_regnum;
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trad_frame_set_reg_addr (this_cache, regnum, addr);
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}
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trad_frame_set_reg_addr (this_cache, tdep->ppc_lr_regnum, addr);
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addr += tdep->wordsize;
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trad_frame_set_reg_addr (this_cache, tdep->ppc_cr_regnum, addr);
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addr += tdep->wordsize;
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trad_frame_set_reg_addr (this_cache, tdep->ppc_xer_regnum, addr);
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addr += tdep->wordsize;
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trad_frame_set_reg_addr (this_cache, tdep->ppc_ctr_regnum, addr);
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addr += tdep->wordsize;
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trad_frame_set_reg_addr (this_cache, gdbarch_pc_regnum (gdbarch),
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addr); /* SRR0? */
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addr += tdep->wordsize;
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/* Construct the frame ID using the function start. */
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trad_frame_set_id (this_cache, frame_id_build (base, func));
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}
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static const struct tramp_frame ppcnbsd_sigtramp =
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{
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SIGTRAMP_FRAME,
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4,
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{
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{ 0x3821fff0, ULONGEST_MAX }, /* add r1,r1,-16 */
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{ 0x4e800021, ULONGEST_MAX }, /* blrl */
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{ 0x38610018, ULONGEST_MAX }, /* addi r3,r1,24 */
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{ 0x38000127, ULONGEST_MAX }, /* li r0,295 */
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{ 0x44000002, ULONGEST_MAX }, /* sc */
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{ 0x38000001, ULONGEST_MAX }, /* li r0,1 */
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{ 0x44000002, ULONGEST_MAX }, /* sc */
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{ TRAMP_SENTINEL_INSN, ULONGEST_MAX }
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},
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ppcnbsd_sigtramp_cache_init
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};
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/* NetBSD 2.0 introduced a slightly different signal trampoline. */
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const struct tramp_frame ppcnbsd2_sigtramp =
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{
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SIGTRAMP_FRAME,
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4,
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{
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{ 0x3821fff0, ULONGEST_MAX }, /* add r1,r1,-16 */
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{ 0x4e800021, ULONGEST_MAX }, /* blrl */
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{ 0x38610010, ULONGEST_MAX }, /* addi r3,r1,16 */
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{ 0x38000127, ULONGEST_MAX }, /* li r0,295 */
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{ 0x44000002, ULONGEST_MAX }, /* sc */
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{ 0x38000001, ULONGEST_MAX }, /* li r0,1 */
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{ 0x44000002, ULONGEST_MAX }, /* sc */
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{ TRAMP_SENTINEL_INSN, ULONGEST_MAX }
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},
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ppcnbsd_sigtramp_cache_init
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};
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static void
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ppcnbsd_init_abi (struct gdbarch_info info,
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struct gdbarch *gdbarch)
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{
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nbsd_init_abi (info, gdbarch);
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/* For NetBSD, this is an on again, off again thing. Some systems
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do use the broken struct convention, and some don't. */
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set_gdbarch_return_value (gdbarch, ppcnbsd_return_value);
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/* NetBSD uses SVR4-style shared libraries. */
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set_solib_svr4_fetch_link_map_offsets
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(gdbarch, svr4_ilp32_fetch_link_map_offsets);
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set_gdbarch_iterate_over_regset_sections
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(gdbarch, ppcnbsd_iterate_over_regset_sections);
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tramp_frame_prepend_unwinder (gdbarch, &ppcnbsd_sigtramp);
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tramp_frame_prepend_unwinder (gdbarch, &ppcnbsd2_sigtramp);
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}
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void _initialize_ppcnbsd_tdep ();
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void
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_initialize_ppcnbsd_tdep ()
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{
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gdbarch_register_osabi (bfd_arch_powerpc, 0, GDB_OSABI_NETBSD,
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ppcnbsd_init_abi);
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/* Avoid initializing the register offsets again if they were
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already initialized by ppc-netbsd-nat.c. */
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if (ppcnbsd_reg_offsets.pc_offset == 0)
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{
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/* General-purpose registers. */
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ppcnbsd_reg_offsets.r0_offset = 0;
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ppcnbsd_reg_offsets.gpr_size = 4;
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ppcnbsd_reg_offsets.xr_size = 4;
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ppcnbsd_reg_offsets.lr_offset = 128;
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ppcnbsd_reg_offsets.cr_offset = 132;
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ppcnbsd_reg_offsets.xer_offset = 136;
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ppcnbsd_reg_offsets.ctr_offset = 140;
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ppcnbsd_reg_offsets.pc_offset = 144;
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ppcnbsd_reg_offsets.ps_offset = -1;
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ppcnbsd_reg_offsets.mq_offset = -1;
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/* Floating-point registers. */
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ppcnbsd_reg_offsets.f0_offset = 0;
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ppcnbsd_reg_offsets.fpscr_offset = 256;
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ppcnbsd_reg_offsets.fpscr_size = 4;
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}
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}
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